Transmission replacement instructions please?

LANCELAMBERT

MEMBER
2006 CHEVROLET SILVERADO
V8
2WD
AUTOMATIC
84,000 MILES

Check engine light comes on and then it will not shift automatically. I have changed the 2 shift solenoids. It is stuck in overdrive when in drive. It cant be manually shifted. Has stayed this way for quite some time, then it reverted back to normal. Now, the problem is back again they say I need to replace the transmission can you help me please? Any idea what I need to do?

2 Replies

KASEKENNY

MECHANIC
18,907 POSTS

It sounds like there is a leak in a seal or valve body. Unfortunately they are most likely correct that a unit will be easier and almost the same price.

Here is a guide that will help with this:

https://www.youtube.com/watch?v=3vJAojsrfuU

Below is the process from the manual that will help with this. Thanks

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Thursday, May 6th, 2021 AT 10:42 AM

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Here is the information you requested. Usually what we ask you to do is provide us with the stored transmission codes to help properly diagnose any transmission issues. If you perform a CAN scan on your truck it checks all vehicle systems to read any stored codes in the computer like transmission codes you mentioned. Here is a tutorial showing how to perform a CAN scan on your truck:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

If you choose to replace the transmission here is a tutorial for you to view showing how to remove and replace a manual transmission which is similar to an automatic transmission:

https://www.2carpros.com/articles/transmission-replacement-removal-manual

I've attached picture steps below on how to remove and replace the automatic transmission on your truck. Hope this helps and thanks for using 2CarPros.

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